Combined burner and boiler-furnace



(NoMfideL) O. T. BURRELL.

COMBINED BURNER AND BOILER FURNACE. N0.'324,298.- Pate ed Aug. 1

\WLJHAH WITNESSES INVENTOR Attorney N. PETZHS, PhohrL'rthognpMr. Wahhmw. n. a

UNIT D STATES PATENT OFFICE.

CHRISTOPHER 'r. BURRELL, or All SABLE, MICHIGAN.

v COMBINED BURNER AND BOILER-FURNACE.-

SPECIFICATION forming part of Letters Patent No. 324,298, dated August 11, 1885.

Application filed May 21, met. (No model.)

- RELL, of Au Sable, county of Iosco, State of Michigan, have invented a new and useful Improvement in Combined Burners and Boiler- Furnaces; and I .declare the following to be a full, clear, and exact description of the same,

such as will enable others skilled in the art to" which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

My invention is designed to provide an improved burner and boiler-furnace adapted to consume the waste slabs, edges, sawdust, &c., produced in lumber-mills, to prevent their accumulation, and at the same time to make the heat generated by their combustion available for running the mill.

Heretofore it has been common to use isolated burners to consume the waste of lumbermills but the heat generated thereby has not been made available for running the machin= ery, the sole object being to consume the waste to get it out of the way.

My device contemplates the combination of a burner suited to all the uses of burners em-' ployed to prevent such accumulation, and at the same time direct the heat to a battery of boilers arranged in connection therewith, as more fully hereinafter described in the specification, illustrated in the drawings, and'pointed out in the claims.

In the drawings, Figure l is a longitudinal section of a device embodying my invention. Fig. 2 is a plan view with the cover removed. Fig. 3 is a vertical cross-section along the line X X, Fig. 1.

A represents a battery of any desired number of boilers, one or more of said boilers being made shorter than the others-as, for instance, as indicated in Fig. 2, by the boiler A, leaving room at the shortened end for a chute, B, constructed to receive the slabs, edges, &c., which may be directed thereinto in any proper manner-as, for instance, by means of a suitable carrier, 0.

The battery of boilers is arranged within a suitable wall, D, preferably made of brick, with a foundation-wall of stone, E, said walls made of any suitable thickness and arranged to receive a series of supports, F, upon the sides of the boiler, upon which supports are located a series of cross beams, G, by which the boilers are suspended in any suitable manner-as, for instance, by means of the rods H- the boilers being provided with shoulders h, riveted or otherwise secured thereto, the suspended rods H being engaged therewith by means of the bolt,'as shown at h, the rod being provided above the cross-beam with a nut, H. I do not limit myself to this precise manner of suspending the boilers to the cross beams.

v Beneath the boilers is a combustion-chamber of large dimensions, I, adapted to receive slabs, edges, &c., delivered thereto through the chute B communicating therewith.

J represents the grate-bars, which may be supported at theirforward ends upon a flange of the brick wall D, and at their rear ends upon a similar flange in the bridge-wall K. I prefer, also, to provide additional cross-bars j, to assist in supporting the grate-bars, said bars being supported upon standards J, the front of the bridge-wall extending a short distance above the grate, and then extends upon an incline rearwardly, as shown, so as to direct the heat from the combustion-chamber up under the boilers, whence the products of combustion pass into an uptake, L, through a suitable flue, Z.

L represents an extension of the uptake, the base L, preferably, being made of brick, provided with a collar-plate, Z, upon which the extended flue L is located.

The boilers are cylinder boilers of any suitable diameter, provided, of course, with the necessary valves, gages, mud pipe, steamdrum, &c. I have found in actual use of this device that a battery of five boilers, four of which are about fifty feet in length and the fifth about forty feet, are very suitable for the purpose, and a grate surface of about sixteen and one-half by twenty feet, the combustionchamber being about sixteen feet from the top of the grates to the bottom of the boilers.

(1 represents a draft-door located in the front brick wall and beneath the grates. I also prefer to locate draft-door in the brick wall upon each side, as indicated at d, these doors being located so as to communicate with the space beneath the grates.

D is a feed-door located in the front wall, communicating with the combustion-chamber, for convenience of starting the firein the combustion-chamber.

The brick walls on the inside are provided with any suitable lining, if desired. The additional brick wall, K, may be used with an inclined bridge, 7 connecting them at the top.

M is the ash-pit in the rear of the bridge wall.

I prefer to leave a space about three inches wide between the boilers and the brick wall adjacent, which, however, may be partially filled in with courses of loose brick, so as to allow for expansion and prevent the cracking of the walls.

The top of the burner and furnace may be inclosed within a suitable roof, N. The dimensions of the grate surface, boilers, and flue may be increased or diminished to adapt the device for any desired capacity.

I prefer to divide the grate into five series of bars, supported by standards and the brick wall, as already described.

I prefer to fill in the aslrspace back of the bridge-wall with sand or clay to a level with the surface of the grates.

\Vhat I claim is- 1. The combination, with a series of sus pended cylindrical boilers, of a combustionchamber provided with a grate and a chute communicating with the top of said chamber, one of said boilers shortened to permit the engagement of said chute, substantially as described.

2. The combination,with a furnace-wall, of carrier cross-beams supported thereby, a seriesof boilers suspended by said cross-beams. a combustion-chamber beneath the boilers, and a chute communicating with said combustionchamber, substantially as described.

' 3. The combination, with a furnace wall and uptake, of a series of cross-beams supported upon said walls and a series of boilers supported by said cross-beams by intervening rods, one of said boiler-s shortened to permit theengagement of a chute, said chute arranged to communicate with the top of the combustion chamber, substantially as described.

In testimony whereof Isign this specification in the presence of two witnesses.

CHRISTOPHER T. BURRELL.

Witnesses:

J AMES E. FORREST, I-IIRAM A. HALL. 

